Concrete-mold.



No. 822,284. 1 PATENTED .TUNE 5, 1906. I. L. LANDIS. CONCRETE MOLD.

APPLICATION FILED DB0 22 1905 .wu I Y W QNIVW. M

No; 822,284; f PATENTED JUNE 5, 1906. I. L. LANDIS.

CONCRETE MOLD.

APPLICATION FILED DEG. 22, 1905.

2 SHEETS-SHEET 2.

'point-ed out in the following description, illus- ISRAEL L. LANDIS, OF CHICAGO, ILLINOIS.

CONCRETE-MOLD.

Specification of Letters Patent.

Patented June 5, 1906.

Application led December 22, 1905. Serial No. 292,903.

T0 all wwm/ it hefty concern:

Be it known that I, IsnAEL L. LANDrs, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Concrete-Molds, of which the following is a specification.

This invention relates to mold-boards arranged to provide a mold-space thcrebetween and provided with a mechanism for expanding and contracting said boards to respectively release a cast or form and reset the mold for a new cast.

The obj ect of the invention is to improve the construction of molds for long casts, such as fence-posts and the like; to provide means for shortening or lengthening the mold-chamv ber and to divide the chamber into a plural-l ity of smaller chambers to provide an improved construction of mold-board, to the end of making ii comparatively rigid lon gitudinally; to provide novel eXpansible and contractile spacers or movable partition walls adjustable to different width of moldspaces and adapted to assist in supporting the mold-boards against bending strains, and to embody such other advantages as will appear hereinafter.

IVith the above-mentioned objects in view the invention consists in the novel construction and arrangements of parts, as will be;

trated in the drawings, and incorporated in, the claims.

In the drawings, Figure 1 is a top plan view of a single mold embodying my invention. Fig. 2 is asimilar view of a double mold. Fig. 3 is a side elevation of the mold shown in Fig. 2. Fig. 4 is adetail view. Fig. 5 is an enlarged section taken on line X X of Fig. I. Fig. 6 is a section taken on line Y Y oi' Fig. 5. Fig. 7 is a perspective view of the adjustable partition-wall or spacer shown in Figs. 5 and 6. Figs. 8, 9, 10, and 11 represent cross-sections of different forms of moldboards, the line Z Z in Fig. 1 representing substantially the section-line for each of the modified forms.

Referring in detail to the several views and first to Fig. 1, 2 represents a plain bottom board, upon which the mold-boards 3 and 4 are loosely mounted. These boards are provided with stiifening-ribs 5 and 6, which strengthen them against bending strains.

In F 8 to 11, inclusive, arc shown modi- 'fications of the cross-section shown in Fig. 5.

As shown in Fig. 1, the ribs 5 and 6 do not extend to the ends of the mold-boards.

Hence the section on line Z Z of Fig. 1 (shown .of double channel-bars or I-beams 9 and 10,

the adjacent inner channels of which are filled by the boards 3 and 4.

In Fig. 11 the mold-boards have the form of T-bars 4 and 3, wherein the wings 6 and 5 are substantially identical with the wings or ribs 6 and 5 in Fig. 5, with theexception that the mold-boards and their strengthening wings or ribs are made of wood in Fig. 5, while the same structure is all iron or steel in Fig. 11.

The mold-space 11, Fig. 1, is closed at one end by a wall or partition 12, secured to the mold-board 3. The opposite end of said moldspace is closed by an adjustable partition or spacer 13. (Shown on an enlarged scale in Figs. 5, 6, and 7.) A similar partition-wall or spacer 13 is shown between the end walls 12 and 13 as dividing the space 11 into two compartments. Several partitions 13 may be provided when it is desired to divide the space 11 into more than two mold-chambers for the purpose of utilizing the single post or pole mold as a plurality of molds for shorter concrete structures or for molding concrete blocks. The mold-boards 3 and 4 are moved laterally relatively to each other by means of two elbow-levers 14 and 15, the former fulcrumed at 16 in a slot or opening 17, formed in or near the end of mold-board 4, while the latter lever is fulcrumed similarly in the moldboard 3 at 1S. The load end of the lever 15 is pivoted to the mold board 4 at 19, the pivot 19 being engaged with one of a series of holes 2O in the load end of the lever. By adjusting the pivot-pin 19 in different holes 20 the mold-space 11 may be widened or nari rowed, as the case may be. The lever 14 is similarly pivoted to the mold-board 3, the pivot-pin 2 1 being adjustable to engage either one of the holes 22 for the same purpose. By adjusting the pivot-pins 19 and k21 oppositely relatively to the fulcrum-pins 18 and 16 the mold-chamber 11 may end than at the other and adapted for molding a tapered fence-post or the like. The parbe made wider at one IIO titions 13 and 13 (shown in detail in Figs. 5, 6, and 7 are constructed to accommodate themselves to the variations in the width of the chamber 11 or the several different widths of the subdivisions of said chamber where a tapered post is molded in several blocks or sections.

Referring to the construction of the spacer or adjustable partition-wall, as shown in Figs. 5 to 7, inclusive, same comprises two clamping-jaws 23 and 24. The shanks of said jaws overlie each other and are slidably adjustable relatively to each other to vary the distance apart of the jaws 23 and 24. The shank 25 of the jaw 24 is of substantially uniform thickness, as shown in Fig. 5, while the shank 26 of the jaw 23 is wedge-shaped in cross-section and has a slot 27 therein for the bolt 28. This bolt passes vertically through a board or wooden block 29, which constitutes the body of the partition. The head 30 of the bolt is countersunk in the lower edge of the wall 29, and the upper threaded end passes through a suitable opening in the shank 25, which is opposite the slot 27. A thumb-nut 31 on the threaded end of the bolt when tightened against the shank 26 serves to clamp the wall 29 and shanks 25 and 26 together as a rigid whole. When the concrete isv tamped in between the mold-boards 3 and 4 and the walls or boards 3 and 4 tend to spread apart, should the nut 31 not be tight enough to keep the shanks 25 and 26 from slipping over each other the-engagement will be tightened by a slight movement, owing to the fact that the shank 26 is wedge-shaped, and the spreading movement will force a thicker portion of the shank between the nut 31 and the shank 25. A screw 32, with a butterfly-head 33, has threaded engagement with the jaw 24, and its inner end is arranged to bear against the vertical outer face of the mold board 3. By means of the screw 32 the clamp, comprising jaws 23 24, shanks 25 26, and the parts which hold said Shanks together, may be rmly fastened in place, and the mold-boards may also be adjusted slightly toward each other after the jaws 23 and 24 are in fixed relation t0 each other.

In Fig. 2 a double mold is shown, and the construction of the same is substantially identical with the construction described in the foregoing, with the exception that the moldspace 11 is divided longitudinally by a moldboard 34 andfthat the levers 14 and 15', corresponding, respectively, to levers 14 and 15, are fulcrumed upon said mold-board 34 and are made longer, so as to reach across two mold-chambers instead of one. These levers in both instances are provided with loop-shaped hand-grips. The double spacer or partition-wall 36 (shown in Fig. 2) is substantially a duplication of the device shown in Figs. 5 to 7, with two jaws 23 merged into one and the jaws 24 arranged at opposite ends of the double clamp, as shown in Fig. 2. When the different levers are in their closed positions, their power ends are locked against the sides of the mold-board by means of turncatches 37, pivotally secured to said sides.

The block or board 29 forms substantially a part of the clamp members 24 25, and'this block, as shown in Figs. 6 and 7, telescopes the drop sides 38 and 39, which extend downwardly from the shank 26, so as to cover the opposite sides of the block 29. When the jaws 23 and 24 are expanded from their normal positions, (shown in full lines,) the sides 38 and' 39 form extensions of one end of the block or its opposite sides, while the opposite end of the block projects from between the sides 38 and 39. In this manner the sides 38 and 39 substantially extend one end of the block, while the block itself extendsA the opposite ends of the sides 38 and 39.

The operation of my inventionwill be readily understood frorn the foregoing. Starting from the position shown in Fig. 1, showing the positions of the parts when a cast has been formed, said cast is released by turning the catches 37 out of engagement with the levers, and by swinging the handle portions of said levers away from the respective sides of the mold, as shown by dotted lines in Fig. 1, the sides 3 and 4 are moved away from each other, the nuts 31 having first been loosened to permit the partition-walls to expand, as explained in preceding paragraph.. The walls of the mold-boards having been loosened from the cast or casts, where several are made at one time, the mold-boards maybe lifted free of the cast, and the latter may be carried away on the bottom board 2 and another board placed under the mold, which is then reset by throwing in the levers, tightening the nuts 31, &c.

What I claim as new, and desire to secure by Letters Patent, is-

l. In combination, a series of mold-boards and partitions arranged to form a moldchamber, levers upon which said mold-boards are adjustable to vary the normal size of the mold, said levers being operable to expand or contract said mold boards simultaneously and partitions adjustable in conformity with the variations in said normal size.

2. In combination, a series of mold-boards and partitions arranged to form ,a moldchamber, levers for lengthening or shortening said chamber, said levers being operable to move all the mold-boards simultaneously.

3. In combination a series of mold-boards, levers and partitions adjustable relatively to each other to form either one or several moldchambers, said levers being operable to move the sides of said chamberlor chambers relatively to each other. i A

4. The combination of a series of moldboards, levers and partitions adjustable to form either one or more than one mold-cham- IOO IIO

ber, said levers constituting means for expanding and contracting said chamber or chambers simultaneously.

5. The combination with a series of moldboards and partitions, of operating -levers for adjusting and simultaneously moving the mold-boards either parallel or angularly relatively to each other to form, respectively, a mold-chamber of either uniform or varying width.

6. In combination, a series of mold-boards, levers arranged to support said mold-boards relatively to each other, and partitions arranged to form either one or more moldchanibers, said mold-boards, levers and partitions being adjustable relatively to each other to form a mold chamber, or chambers, with either parallel or relatively inclined sides, and said levers being operable to move said sides to expand or contract said mold chamber, or chambers.

7. In a post-molding machine, a series of mold-boards and partitions arranged to form a moldchamber, operating-levers arranged to connect said mold-boards and to move them relatively to each other, said partitions being constructed and arranged to lengthen or shorten when said mold-boards are moved and said levers being adjustable upon said mold-boards to vary the size of the moldchamber.

8. In a post-molding machine, a series of mold-boards and partitions arranged to form mold-chambers, operating-levers arranged to sustain said mold-boards in their relative relations and to move them relatively to each other, said mold-boards being adjustable relatively to each other along said levers to vary the spacing apart of said mold-boards, and said partitions being exp ansible or contractile to conform with the variations in the widths of said chambers.

9. The combination with a series of moldboards and partitions, arranged either as a single mold-chamber or as a plurality thereof, of levers arranged to hold said mold-boards in their normal relative relations, said levers being adjustable upon said mold-boards to vary said relations and also operable to move said mold-boards relatively to each other.

10. The combination with a series of moldboards and partitions arranged to form a mold-chamber therebetween, of means for expanding and contracting the mold-boards and partitions-to vary the size of said molde chamber, a part of said means being operable to move said mold boards simultaneously relatively to each other.

11. The combination7 with a plurality of mold-boards, of expansible and contractile partitions, and an actuating mechanism which supports said mold-boards relatively to each other and is also adapted to expand and contract both said mold-boards and partitions.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

ISRAEL L. LANDIS. Witnesses:

GEO. F. RYAN,

E. I-IEDRICK. 

